Dante12129

I bought a Mega 2560 R3 from Radioshack a few days ago. I tried it on one computer, and it woldn't upload any sketches. On my second computer, it was able to upload Blink but when I tried the AnalogReadSerial, DigitalReadSerial, and BareMinimum, it wouldn't work. I did the loopback test and that worked fine. I am using XP. Here is my error code:

Mozart

I am able to get sketches uploaded, however, I am unable to use avrdude to upload anything to the ATmega 2560. It seems like a lot of people are having this same issue, however, there does not appear to be a consistent solution.

If the Mega is installed in windows correctly it posts as a com port in the device manager under ports com/lpt. Windows 7 users will have to download the divers from arduino.cc and then manually browse the arduino-1.0\drivers directory from the device manager update driver utility. The unistalled mega will be listed as an unknown device on USBxx where xx is the hub's logical port.

Mozart

I am currently running Windows XP. The com port does show up in <Control Panel>-><System>-><Hardware>-><Device Manager>-><Ports (Com & Lpt)>-><Arduino Mega 2560 R3 (Com4)>

I have tried all of the Reset advice provided in the documented solution (i.e. hold the button down and run run avrdude) but still the best I can get is the Timeout() error. Is there some other piece of information that I can provide to assist in debugging this?

The serial monitor ties up the com port just as an upload would, make sure no serial monitors are open, go to com4's properties and click advanced, set a port spec above com10. Select the applicable port in the ports menu in the arduino ide tools....Serial Ports

Dante12129

Well I was able tp upload fine to it yesterday and now this one isn't working either. The last program I uploaded was the one for a PING, and it will still send the measurements from it back over serial. I've tried changing the COM number and that won't work. When I uploades ysterday, the TX/RX both blinked very rapidly but now they both blink every seconds. It's the same error as last time.